Styling changes to the profile calendar widget

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Issues in mobile view:

1. The filter icon is not aligned with the right chevron.
2. Some extraneous element is on the right side of the calendar.
3. The Projects list has a white patch below.

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In desktop view, the calendar has a white frame visible at bottom.

The event label needs to be offset upwards a bit so it doesn't overlap with the date digits of the next row.

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Widget issues:

• Left side: Left chevron and label aren't visually aligned
• Right side: Chevrons have hover+active state that stays after a click, but filter icon doesn't have it. Hover+active state is not required here.
• Chevron tap targets are reduced from before, which may be an issue on mobile
• Calendar days have an underline on hover but aren't clickable (see day 1)
• Label text continues to overlap day numbers on the next line